UST-20LX Please Help! - setting up basic power supply

[Erik Peterson]

Hi Guys,

I have a deadline of Thursday here and I need to setup a UST-20LX with a
basic power supply so I can record some depth data for a test. Ideally I
would like some kind of adapter that could connect to the Power Supply &
I/O cable and then connect to a usb port or battery.

Thanks,
Erik

[miyamoto musashi]

Hey Erik,

I guess you are already familiar with the schematics given in:
http://www.hokuyo-aut.jp/02sensor/07scanner/ust_10lx_20lx.html

That should be the correct and official way, I don't know your time zone but as Thursday is coming closer and if you are desperate and don't mind a "nasty" solution here it is.

1). Take the blue (GND) and the brown (VCC) cables from the provided connector.

2). Prepare a power supply, for my demonstration I'm using a 12V battery.

3). Connect the blue cable (GND) to the negative (GND) terminal, and the brown (VCC) to the positive (VCC) terminal

4). voilà! the sensor will work

This solution does not require the other input/output signals.


The USB solution you seek may not work. It is not stated in the manual but unofficially the sensor also works at 5V but will draw more current that most USB ports allow (in a computer this is about 500mA) plus it wil draw some extra current during boot time. Perhaps a USB hub may allow a bit more than 1A per port but I don't have one at hand, and besides hacking the USB connector to provide VCC and GND may take more time that you actually have.

Hope this helps and that you make the dateline.

[miyamoto musashi]

Sorry the reference of attached images didn't work as expected.

The first image should be "brown-blue-cables.jpg"

The second image should be "connect-to-12V-battery.jpg"

And the third image should be "connect-to-12V-battery--sensor-is-working.jpg"

[Erik Peterson]

It is up and running. Thanks for your help!